/*
 * Slides, A Slideshow Plugin for jQuery
 * Intructions: http://slidesjs.com
 * By: Nathan Searles, http://nathansearles.com
 * Version: 1.0.5
 * Updated: December 26th, 2010
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

(function($) {
	$.fn.slides = function(option) {
		option = $.extend({}, $.fn.slides.option, option);
		return this
				.each(function() {
					$('.' + option.container, $(this)).children().wrapAll(
							'<div class="slides_control"/>');
					var elem = $(this), control = $('.slides_control', elem), total = control
							.children().size(), width = control.children()
							.outerWidth(), height = control.children()
							.outerHeight(), start = option.start - 1, effect = option.effect
							.indexOf(',') < 0 ? option.effect : option.effect
							.replace(' ', '').split(',')[0], paginationEffect = option.effect
							.indexOf(',') < 0 ? effect : option.effect.replace(
							' ', '').split(',')[1], next = 0, prev = 0, number = 0, current = 0, loaded, active, clicked, position, direction;
					if (total < 2) {
						return;
					}
					if (start < 0) {
						start = 0;
					}
					;
					if (start > total) {
						start = total - 1;
					}
					;
					if (option.start) {
						current = start;
					}
					;
					if (option.randomize) {
						control.randomize();
					}
					$('.' + option.container, elem).css({
						overflow : 'hidden',
						position : 'relative'
					});
					control.css({
						position : 'relative',
						width : (width * 3),
						height : height,
						left : -width
					});
					control.children().css({
						position : 'absolute',
						top : 0,
						left : width,
						zIndex : 0,
						display : 'none'
					});
					if (option.autoHeight) {
						control.animate({
							height : control.children(':eq(' + start + ')')
									.outerHeight()
						}, option.autoHeightSpeed);
					}
					if (option.preload
							&& control.children()[0].tagName == 'IMG') {
						elem.css({
							background : 'url(' + option.preloadImage
									+ ') no-repeat 50% 50%'
						});
						var img = $('img:eq(' + start + ')', elem).attr('src')
								+ '?' + (new Date()).getTime();
						$('img:eq(' + start + ')', elem).attr('src', img).load(
								function() {
									$(this).fadeIn(option.fadeSpeed,
											function() {
												$(this).css({
													zIndex : 5
												});
												elem.css({
													background : ''
												});
												loaded = true;
											});
								});
					} else {
						control.children(':eq(' + start + ')').fadeIn(
								option.fadeSpeed, function() {
									loaded = true;
								});
					}
					if (option.bigTarget) {
						control.children().css({
							cursor : 'pointer'
						});
						control.children().click(function() {
							animate('next', effect);
							return false;
						});
					}
					if (option.hoverPause && option.play) {
						control.children().bind('mouseover', function() {
							stop();
						});
						control.children().bind('mouseleave', function() {
							pause();
						});
					}
					if (option.generateNextPrev) {
						$('.' + option.container, elem).after(
								'<a href="#" class="' + option.prev
										+ '">Prev</a>');
						$('.' + option.prev, elem).after(
								'<a href="#" class="' + option.next
										+ '">Next</a>');
					}
					$('.' + option.next, elem).click(function(e) {
						e.preventDefault();
						if (option.play) {
							pause();
						}
						;
						animate('next', effect);
					});
					$('.' + option.prev, elem).click(function(e) {
						e.preventDefault();
						if (option.play) {
							pause();
						}
						;
						animate('prev', effect);
					});
					if (option.generatePagination) {
						elem.append('<ul class=' + option.paginationClass
								+ '></ul>');
						control.children().each(
								function() {
									$('.' + option.paginationClass, elem)
											.append(
													'<li><a rel=' + number
															+ ' href="#">'
															+ (number + 1)
															+ '</a></li>');
									number++;
								});
					} else {
						$('.' + option.paginationClass + ' li a', elem).each(
								function() {
									$(this).attr('rel', number);
									number++;
								});
					}
					$('.' + option.paginationClass + ' li a:eq(' + start + ')',
							elem).parent().addClass('current');
					$('.' + option.paginationClass + ' li a', elem).click(
							function() {
								if (option.play) {
									pause();
								}
								;
								clicked = $(this).attr('rel');
								if (current != clicked) {
									animate('pagination', paginationEffect,
											clicked);
								}
								return false;
							});
					if (option.play) {
						playInterval = setInterval(function() {
							animate('next', effect);
						}, option.play);
						elem.data('interval', playInterval);
					}
					;
					function stop() {
						clearInterval(elem.data('interval'));
					}
					;
					function pause() {
						if (option.pause) {
							clearTimeout(elem.data('pause'));
							clearInterval(elem.data('interval'));
							pauseTimeout = setTimeout(function() {
								clearTimeout(elem.data('pause'));
								playInterval = setInterval(function() {
									animate("next", effect);
								}, option.play);
								elem.data('interval', playInterval);
							}, option.pause);
							elem.data('pause', pauseTimeout);
						} else {
							stop();
						}
					}
					;
					function animate(direction, effect, clicked) {
						if (!active && loaded) {
							active = true;
							switch (direction) {
							case 'next':
								prev = current;
								next = current + 1;
								next = total === next ? 0 : next;
								position = width * 2;
								direction = -width * 2;
								current = next;
								break;
							case 'prev':
								prev = current;
								next = current - 1;
								next = next === -1 ? total - 1 : next;
								position = 0;
								direction = 0;
								current = next;
								break;
							case 'pagination':
								next = parseInt(clicked, 10);
								prev = $(
										'.' + option.paginationClass
												+ ' li.current a', elem).attr(
										'rel');
								if (next > prev) {
									position = width * 2;
									direction = -width * 2;
								} else {
									position = 0;
									direction = 0;
								}
								current = next;
								break;
							}
							if (effect === 'fade') {
								option.animationStart();
								if (option.crossfade) {
									control
											.children(':eq(' + next + ')', elem)
											.css({
												zIndex : 10
											})
											.fadeIn(
													option.fadeSpeed,
													function() {
														control.children(
																':eq(' + prev
																		+ ')',
																elem).css({
															display : 'none',
															zIndex : 0
														});
														$(this).css({
															zIndex : 0
														});
														option
																.animationComplete(next + 1);
														active = false;
													});
								} else {
									option.animationStart();
									control
											.children(':eq(' + prev + ')', elem)
											.fadeOut(
													option.fadeSpeed,
													function() {
														if (option.autoHeight) {
															control
																	.animate(
																			{
																				height : control
																						.children(
																								':eq('
																										+ next
																										+ ')',
																								elem)
																						.outerHeight()
																			},
																			option.autoHeightSpeed,
																			function() {
																				control
																						.children(
																								':eq('
																										+ next
																										+ ')',
																								elem)
																						.fadeIn(
																								option.fadeSpeed);
																			});
														} else {
															control
																	.children(
																			':eq('
																					+ next
																					+ ')',
																			elem)
																	.fadeIn(
																			option.fadeSpeed,
																			function() {
																				if ($.browser.msie) {
																					$(
																							this)
																							.get(
																									0).style
																							.removeAttribute('filter');
																				}
																			});
														}
														option
																.animationComplete(next + 1);
														active = false;
													});
								}
							} else {
								control.children(':eq(' + next + ')').css({
									left : position,
									display : 'block'
								});
								if (option.autoHeight) {
									option.animationStart();
									control.animate({
										left : direction,
										height : control.children(
												':eq(' + next + ')')
												.outerHeight()
									}, option.slideSpeed, function() {
										control.css({
											left : -width
										});
										control.children(':eq(' + next + ')')
												.css({
													left : width,
													zIndex : 5
												});
										control.children(':eq(' + prev + ')')
												.css({
													left : width,
													display : 'none',
													zIndex : 0
												});
										option.animationComplete(next + 1);
										active = false;
									});
								} else {
									option.animationStart();
									control.animate({
										left : direction
									}, option.slideSpeed, function() {
										control.css({
											left : -width
										});
										control.children(':eq(' + next + ')')
												.css({
													left : width,
													zIndex : 5
												});
										control.children(':eq(' + prev + ')')
												.css({
													left : width,
													display : 'none',
													zIndex : 0
												});
										option.animationComplete(next + 1);
										active = false;
									});
								}
							}
							if (option.pagination) {
								$('.' + option.paginationClass + ' li.current',
										elem).removeClass('current');
								$(
										'.' + option.paginationClass
												+ ' li a:eq(' + next + ')',
										elem).parent().addClass('current');
							}
						}
					}
					;
				});
	};
	
	$.fn.randomize = function(callback) {
		function randomizeOrder() {
			return (Math.round(Math.random()) - 0.5);
		}
		return ($(this).each(function() {
			var $this = $(this);
			var $children = $this.children();
			var childCount = $children.length;
			if (childCount > 1) {
				$children.hide();
				var indices = [];
				for (i = 0; i < childCount; i++) {
					indices[indices.length] = i;
				}
				indices = indices.sort(randomizeOrder);
				$.each(indices, function(j, k) {
					var $child = $children.eq(k);
					var $clone = $child.clone(true);
					$clone.show().appendTo($this);
					if (callback !== undefined) {
						callback($child, $clone);
					}
					$child.remove();
				});
			}
		}));
	};
})(jQuery);